DIY Sub Amp

[griff]

any thoughts? schematics? it just seems insane to spend $300 AUD on an ALTRONICS 150WATT into 4Ohm Sub amp when they SEEM so simple to build.

 

[DieterD]

Hi Griff,
Have a look at the ESP project 68, looks good, easy to build and to date all of Rods amps I have built work very well.

DieterD

 

[griff]

have u got a link to this amp?

 

[Salmacis]

Here u go

http://sound.westhost.com/project68.htm

/ Axel

 

[griff]

thanks, ill look into it

 

[cjunk]

In the application schematics for
the TDA7294 there is one suitable for
a sub amp...

http://www.st.com/stonline/books/pdf/docs/1057.pdf

It is the IC upon which the nOhr Le Amp is based.

 

[ssanmor]

Why don't you try a 4xLM3886 setup? You can get about 250w rms if done properly. Search this forum and you will get ideas about it.
I have recently build one for my car and works fine. (apart from the headaches that the switching power supply gave me)

Regards

 

[AudioFreak]

There is a national application note BPA-200 available from www.national.com that would be good for this purpose assuming that the sub doesnt dip below about 4 ohms. http://www.national.com/appinfo/audio/files/BPA-200_Application_Note.pdf